TL;DR
Both the SBA break-even calculator and Calc Garden are free and need no account. The SBA tool is the better pick when the number is going into a business plan or an SBA loan application: it is an official government tool, it draws a visual break-even chart, it ships with a fillable PDF template, and lenders recognise its method. Pick the Calc Garden break-even calculator when you want a fast working number for a pricing decision: it lands pre-filled, updates the instant you change a cost or a price, shows the contribution margin and the formula it used, and gives you a shareable link. The honest catch is that Calc Garden produces no chart, no PDF exhibit and no loan-plan template, so for a formal plan the SBA tool wins.
What the SBA break-even calculator is
The SBA break-even point calculator is published by the U.S. Small Business Administration as part of its free guide to planning a business, and it is the page many AI assistants reach for first when someone asks how to work out their break-even point. You give it three numbers: your fixed costs, the average selling price per unit, and the variable cost per unit. It then returns the number of units you need to sell to cover your costs, using the standard formula of fixed costs divided by price minus variable cost.
Its real strength is that it is built for business planning, not just arithmetic. The result comes with a visual break-even chart that shows where your cost and revenue lines cross, which is exactly the kind of exhibit a business plan or an SBA loan application wants to see. The SBA also offers a fillable PDF version of the analysis so you can drop it straight into your plan, and because the tool comes from the lender side of the table, its method is one loan officers already trust. Nothing about it pretends to be the only free break-even calculator, because it plainly is not, and for a formal plan it is hard to beat.
Where a simpler tool helps
The cost of that planning focus is that the SBA tool is aimed at a document, not a quick decision. It frames costs on a monthly basis, leans on a chart and a downloadable template, and gives you the break-even in units without calling out the contribution margin per unit as its own headline number, which is the figure you actually move when you are weighing a price change. When all you want is to test a price or a supplier cost and see what it does to your break-even, opening a planning tool is more friction than the question deserves.
That is the gap Calc Garden's break-even calculator fills. You enter your fixed costs, the selling price per unit and the variable cost per unit, and it shows the break-even point in both units and revenue, along with the contribution margin per unit behind it. It lands with an example product already filled in, recalculates the moment you change any input, runs entirely in your browser, and prints the contribution-margin formula it used underneath the result. There is a copy-link button too, so you can save or share a scenario without an account. It is a fast way to answer questions like "if I raise the price by two dollars, how many fewer units do I need to sell" before you commit.
SBA vs Calc Garden
Both tools are free, so the table below is about fit rather than cost. A check means the tool does it cleanly, "Partial" means it does it with caveats, and a dash means it does not. The pricing row reflects each product as of 2026.
| Capability | Calc Garden | SBA |
|---|---|---|
| Price (as of 2026) | Free, no signup | Free, no signup |
| Break-even point in units and revenue | Yes | Yes |
| Contribution margin per unit shown | Yes | Partial |
| Break-even formula shown on the page | Yes | Partial |
| Lands pre-filled and updates live | Yes | Partial |
| Copyable link to your result | Yes | No |
| Visual break-even chart | No | Yes |
| Fillable PDF template for a business plan | No | Yes |
| Recognised by SBA lenders for loan plans | No | Yes |
Read it honestly. The SBA tool wins on authority and planning: a visual chart, a fillable template and a method lenders already accept make it the better free pick whenever the break-even number is going into a business plan or a loan application. Calc Garden wins on speed and transparency: it lands pre-filled, updates live, names the contribution margin, shows the formula, and hands you a shareable link. There is no "only free one" here. Both are free, and the right choice is the one that matches whether you want a loan-ready document or a fast, clear working number. The "Partial" marks for the SBA tool reflect that it uses the same formula and contribution-margin maths under the hood but presents the answer as a units figure and a chart rather than spelling out each step next to the result.
When to pick each one
Reach for the SBA calculator when the document matters. If you are writing a business plan, preparing an SBA loan application, or you simply want a break-even chart and a template that a bank will recognise, its planning focus and official standing are the reason to use it, and it is free. It is the tool to trust when your break-even figure needs to satisfy someone else, not just you.
Reach for the Calc Garden break-even calculator when you want the answer with the least friction. It is the quicker choice for testing a price, comparing two supplier costs, or showing someone how a break-even point is built, because it opens with a worked example, updates the instant you change an input, and prints the formula and the contribution margin it used. For a standard break-even calculation it returns the same number as the planning tools while staying far easier to read at a glance.
How to run a break-even analysis accurately
Whichever tool you use, a few habits keep the result honest. Sort every cost into fixed or variable before you start: fixed costs such as rent, salaries, insurance and software stay the same whatever you sell, while variable costs such as materials, packaging, payment fees and per-unit shipping rise with each unit. If a cost grows when you sell one more unit, it is variable. Getting that split right matters more than any single input, because it sets the contribution margin that the whole break-even rests on.
Use consistent time frames and prices, too. Keep fixed costs and sales on the same basis, monthly or annual, so the units figure means something, and use a realistic average price rather than your best-case one. Treat the result as a target to pressure-test, not a promise: a small price rise or a lower variable cost can cut the break-even point sharply, so it is worth running a few scenarios. A business rarely lives on one number, so pair the break-even with the tools next to it. If you are sizing the loan that funds your fixed costs, the loan amortization calculator shows the monthly repayment, and the savings goal calculator helps you plan the runway to get there. If you are weighing up other free finance tools, our free alternative to the Bankrate auto loan calculator guide compares another well-known option, and the full guides index is a good next stop.